Probing anomalous tWb interactions with rare B decays

Abstract

Precision studies of top quark properties are currently underway at the LHC and Tevatron colliders with the prospect of probing anomalous t-W -b interactions. In the mean time, recent experimental results for the B_{d,s} - \bar{B}_{d,s} oscillation observables, the branching ratio B_s->μ^+μ^-, as well as the forward - backward asymmetry in B->K\starl^+l^-, accompanied by the accurate theoretical predictions for the relevant observables obtained within the SM motivate a combined study of these observables in the presence of anomalous t - W - b vertices. We investigate contributions of such anomalous couplings to the B->X_s l^+l^- decay mode, and combining them with the modifications of the B_{d,s} - \bar{B}_d,s, B->X_sγ observables, we determine indirect bounds on the real and imaginary parts of the anomalous t - W - b interactions. We find these to be mostly superior to present direct constraints coming from top decay and production measurements at the LHC and Tevatron. Finally, we predict the allowed effects in the branching ratios of the B_s->μ^+μ^- and B->K^{(*)}ν\barν, as well as the forward-backward asymmetry in B->K^*l^+l^-. We find that improved knowledge of these observables in the future could further constrain some of the anomalous tWb interactions.

14 pages

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• Anti-B --> X(s) gamma in two universal extra dimensions
• New physics in t-> b W decay at next-to-leading order in QCD

Cited by in corpus (42)

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• Towards the Identification of New Physics through Quark Flavour Violating Processes
• Measurement of the W boson polarization in top quark decays with the ATLAS detector
• Is there room for CP violation in the top-Higgs sector?
• Measurement of the B->Xsl+l- branching fraction and search for direct CP violation from a sum of exclusive final states
• Light Higgs and Vector-like Quarks without Prejudice
• The electro-weak couplings of the top and bottom quarks -- global fit and future prospects
• Pinning down electroweak dipole operators of the top quark
• Top and Beauty synergies in SMEFT-fits at present and future colliders
• The impact of flavour data on global fits of the MFV SMEFT
• The Flavor of UV Physics
• Model independent constraints on leptoquarks from b -> s l+ l- processes
• Future prospects for the determination of the Wilson coefficient $C_{7\gamma }^{\prime }$
• A General Analysis of Wtb anomalous Couplings
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• More Synergies from Beauty, Top, $Z$ and Drell-Yan Measurements in SMEFT
• Constraining top-quark couplings combining top-quark and $\mathbf{B}$ decay observables
• Probing anomalous $t\bar{t}Z$ interactions with rare meson decays
• Combination of searches for anomalous top quark couplings with 5.4 fb^-1 of ppbar collisions
• Matching for FCNC effects in the flavour-symmetric SMEFT
• Probing $tt\gamma$ and $ttZ$ couplings at the LHeC
• Anomalous Wtb couplings in gamma-proton collision at the LHC
• Anomalous Top Couplings at Hadron Colliders Revisited
• Probing anomalous $Wtb$ couplings at the LHC in single top quark production through $t$-channel
• The Single Top Quark Physics
• Top quark anomalous tensor couplings in the two-Higgs-doublet models
• Anomalous $tqZ$ coupling effects in rare B- and K-meson decays
• Constraints on anomalous $tcZ$ coupling from $\bar{B}\to {\bar{K}}^{\ast }{\mu }^{+}{\mu }^{-}$ and $B_s\to {\mu }^{+}{\mu }^{-}$ decays
• Top Quark Forward-Backward Asymmetry and Anomalous Right-Handed Charge Currents
• Anomalous Wtb coupling at the LHC
• New Physics effects on hadronic decay asymmetries of the Top quark
• Minimal Flavour Violation and Anomalous Top Decays
• Determining Top Quark Couplings at the LHC: Snowmass White Paper
• Constraints on the anomalous $Wtb$ couplings from $B$-physics experiments
• Associated Production of Single Top Quark and W-boson Through Anomalous Couplings at LHeC based $\gamma p$ Colliders
• 1-Loop Matching of gauge invariant dim-6 operators for B decays
• Angular Correlations in Associated Production of Single Top and Higgs with and without anomalous $Wtb$ Couplings
• Constraints on $Wtb$ anomalous coupling with $B\to X_s\gamma$ and $B_{s}\toμ^{+}μ^{-}
• QCD effects and search for new physics in t -->b W